On Mon, Jul 22, 2019 at 4:05 AM Maxim Blinov <maxim.bli...@embecosm.com> wrote: > Is it possible, in the arch.opt file, to have GCC generate a bitmask > relative to a user-defined variable without an associated name? To > illustrate my problem, consider the following option file snippet: > ... > But, I don't want the user to be able to pass "-mbmi-zbb" or > "-mno-bmi-zbb" on the command line:
If you don't want an option, why are you making changes to the riscv.opt file? This is specifically for supporting command line options. Adding a variable here does mean that it will automatically be saved and restored, and I can see the advantage of doing that, even if it is only indirectly tied to options. You could add a variable here, and then manually define the bitmasks yourself in riscv-opt.h or riscv.h. Or you could just add the variable to the machine_function struct in riscv.c, which will also automatically save and restore the variable. Jim
